Attachment 2 - Statement of Work.pdf

STATEMENT OF WORK

U.S. DEPARTMENT OF STATE

OBO FACILITIES MANAGEMENT DIVISION

U.S. Embassy Madrid Spain

March , 2024

1 INTRODUCTION / SUMMARY OF WORK PROJECT

The US Embassy in Madrid requires the construction of two wheelchair ramps to enhance accessibility for individuals with disabilities.

The ramps will be located at the cafeteria and the back alley of the U.S. Embassy.

Address:

Calle de Serrano, 75, 28006 Madrid, Spain

2 SCOPE OF WORK

2.1 PRIOR TO IMPLEMENTATION

2.1.1 Required site visit and survey. The contractor shall be responsible for researching the existing conditions and matters that affect the cost or performance of the services.

Contractor is required to attend a site visit to confirm all measurement and survey existing layout prior to submission of BOM and quotation. Measurements provided are approximate and US Embassy shall not be held responsible for inaccurate dimensions.

2.1.2 The contractor shall coordinate and obtain any permit required by local authorities for the execution of the project.

2.1.3 DOCUMENT SUBMITTAL PACKAGE. Submit before awarding process, document submittal package that includes:

2.1.3.1 Product Data: Manufacturer's data sheets on each product to be used, including:

2.1.3.1.1 Create concept and sample of material.

2.1.3.1.2 Submit manufacturer’s installation instructions, including preparation, storage, and handling requirements.

2.1.3.2 Design, bill of material to be installed, materials provided by the contractor must be approved before prefabrication and installation.

2.1.3.3 Complete finalized Work Plan including Critical Path Method (CPM) schedule.

2.1.3.4 The submittal package shall be complete in all aspects and shall include existing and proposed diagrams, equipment layout sketches, equipment details and cut sheets, a complete materials list.

2.1.4 DOCUMENT SUBMITTAL PACKAGE. Submit to the CO and/or COR within 15 days of Notice to Proceed, document submittal package that includes:

2.1.4.1 Activity Hazard Analysis (AHA) with detail specification of the safety plan to be implement.

2.1.4.2 List of personnel to be approved by the Embassy for the access request.

2.2 IMPLEMENTATION

2.2.1 AREA ISOLATION AND ACCESS RESTRICTION

2.2.1.1 The contractor shall provide a plan for the isolation and restriction of the access to the area to be intervened.

2.2.1.2 Works must only be carried out by staff with technical knowledge to do so, and always complying with the security rules.

2.2.1.3 The Contractor shall develop and submit for review and acceptance the Plan for isolation as part of their Accident Prevention Plan within 10 days of the start of the works.

2.2.1.4 Protection and isolation of the area. Please include water protection like provisional roof in case of rain.

2.3 DESCRIPTION OF THE WORKS :LINE ITEM 1: RAMP CAFETERIA PATIO

2.3.1 Clearing: Clear the area where the slab will be placed. Remove stones, or other elements that might interfere with the ramp.

2.3.2 Anchoring the metal legs to an existing concrete beam/strip (solera)

Locate and mark anchor points

2.3.2.1 Mark on the existing concrete exactly where each metal leg (post) will sit.

2.3.2.2 Check alignment, spacing, and that all legs will line up correctly along the ramp.

Drill holes for anchor bolts

2.3.2.3 At each marked position, drill holes into the concrete using a hammer drill and masonry bit.

2.3.2.4 The diameter and depth of the holes must match the anchor bolts (mechanical anchors or chemical anchors).

Install anchor bolts or threaded rods

Chemical anchors (epoxy or resin):

2.3.2.5 Clean the hole thoroughly (dust and debris).

2.3.2.6 Inject the resin and insert the threaded rod to the specified depth.

2.3.2.7 Allow the resin to cure fully before loading.

Prepare base plates on the metal legs

2.3.2.8 Each metal leg should have a base plate with pre-drilled holes that match the anchor bolt layout.

2.3.2.9 Check that the plate thickness and hole size comply with the structural design.

Position and level the metal legs

2.3.2.10 Place the base plates of the metal legs over the installed anchor bolts.

2.3.2.11 Use shims or leveling nuts under the base plate if necessary to adjust height and keep the post vertical (plumb).

2.3.2.12 Check plumb with a level on at least two faces of the leg.

2.3.2.13 Tighten nuts and secure the connection

2.3.2.14 Once each leg is in the correct position and plumb, install washers and nuts on the anchor bolts.

2.3.2.15 Tighten all nuts to the specified torque so the base plate is firmly clamped to the concrete.

2.3.2.16 If required, add grout (non-shrink grout) under the base plate to fill any gaps and distribute loads evenly.

Corrosion protection and finishing

2.3.2.17 Protect any exposed steel (base plates, bolt heads) with appropriate paint or coating if not galvanized.

2.3.2.18 Seal around the base plates if needed to prevent water penetration.

2.3.3 Erection of the Metal Structure On Site

Install columns:

2.3.3.1 Place the steel columns over the anchor bolts on the footings.

2.3.3.2 Use shims or leveling nuts to plumb and level each column.

2.3.3.3 Temporarily brace columns until they are connected by beams.

Install main beams/stringers:

2.3.3.4 Fix the main inclined beams or stringers between columns, following the design slope.

2.3.3.5 Use bolted or welded connections as specified.

2.3.3.6 Check alignment, slope, and level.

Install secondary members:

2.3.3.7 Cross beams or purlins to support the slab or deck of the ramp.

2.3.3.8 Diagonal bracing if required for lateral stability.

2.3.3.9 Tighten all bolts to the specified torque and complete any field welds.

2.3.4 Deck / Ramp Surface Over the Steel Frame

Metal deck or formwork:

2.3.4.1 Install metal deck panels or removable formwork over the steel frame.

2.3.4.2 Secure them properly so they can carry the weight of the wet concrete and workers.

Reinforcement:

2.3.4.3 Place rebar or welded wire mesh on top of the deck, as per structural design.

2.3.4.4 Maintain correct concrete cover using spacers.

Concrete pour:

2.3.4.5 Pour concrete over the metal deck to form the ramp slab.

2.3.4.6 Finish with a non-slip surface (e.g., broom finish).

Connections for Side Walls and Handrails

2.3.4.7 Plates or sockets welded to beams or columns for handrails.

2.3.4.8 Brackets to support side brick/stone walls to the ramp edges.

2.3.4.9 After the ramp surface is complete, install Handrails/guardrails bolted or welded to the prepared plates.

2.3.4.10 Any side parapet or curb elements needed for safety.

Protection, Finishing, and Inspection

2.3.4.11 Protect all exposed steel against corrosion:

2.3.4.12 Retouch paint or galvanized areas damaged during installation.

2.3.4.13 Seal joints where water can accumulate.

2.3.5 Construction of the side brick walls

The side walls serve as:

2.3.5.1 Retaining structure for the ramp.

2.3.5.2 Lateral protection (curb) for the wheelchair.

Potential support for guardrails/handrails.

Type of brick

2.3.5.3 Use solid or structural perforated clay brick, suitable for exterior use.

2.3.5.4 Avoid weak or lightweight hollow brick if it will carry loads or handrails without additional reinforcement.

Building the wall

Setting out

2.3.5.5 Mark on the footing the centerline of the walls and their thickness (for example, 12–15 cm for low walls, more if they will be retaining walls or very high).

2.3.5.6 Check that they follow the exact line of the ramp.

First course

2.3.5.7 Lay the first course with well-leveled mortar.

2.3.5.8 Check alignment with string line and level (horizontal) and its relationship to the slope of the ramp.

Subsequent courses

2.3.5.9 Use a cement–sand mortar suitable for exterior use (e.g., 1:4 or according to local standards).

2.3.5.10 Stagger the vertical joints (stretcher bond, not continuous vertical joints).

2.3.5.11 Check plumb (verticality) and alignment with a straightedge and plumb line.

Anchors and reinforcement

2.3.5.12 Place vertical rebars anchored into the footing if the wall retains soil or will be high.

2.3.5.13 Include ties between the wall and the ramp slab (e.g., deformed bars embedded in the concrete and extended into the wall).

2.3.5.14 If you will fix handrails, provide metal anchors or specially designed reinforcement at the required points.

Wall capping

2.3.5.15 Finish the top of the wall with a closing course or a coping piece (which may be brick, concrete, or stone) with a slight slope to shed water.

2.3.5.16 This also makes the subsequent cladding easier.

2.3.6 Preparing the walls for stone cladding

Before installing the stone tiles:

2.3.6.1 Surface cleaning

2.3.6.2 Remove any loose mortar, dust, and dirt from the brick.

2.3.6.3 Lightly dampen the wall .

Base coat

2.3.6.4 Thin layer of bonding mortar (scratch coat or rendering) is applied to even out the wall surface, especially if the brickwork is very irregular.

2.3.6.5 A metal mesh (reinforcing mesh or expanded metal lath) can be fixed with anchors or staples if greater adhesion is required, especially if the tiles are heavy or the wall is exposed to impact.

Adhesive

2.3.6.6 Use a cemment based adhesive of type C2 or a flexible thinset mortar designed for natural stone.

2.3.7 Installing stone tiles on the side walls

Stone

2.3.7.1 natural stone cut to a uniform thickness (not highly irregular).

2.3.7.2 A finish with some texture to prevent slipping if it may be stepped on.

2.3.7.3 Suitable for exterior use and resistant to freeze–thaw cycles if applicable.

Installation

2.3.7.4 Apply the adhesive to the wall (and, depending on the product, also to the back of the tile) with a notched trowel.

2.3.7.5 Set each tile by pressing and slightly sliding it to ensure proper bond.

2.3.7.6 Use spacers or wedges to maintain regular joints.

2.3.7.7 Check with a level and straightedge that the surface plane is even (no bulges or depressions).

2.3.7.8 Prevent adhesive from staining the exposed face of the stone; clean immediately.

Joints

2.3.7.9 Once the adhesive has set, fill the joints with grout or joint mortar suitable for exterior use.

2.3.7.10 Joints must be completely filled and compacted, without voids.

2.3.7.11 Finish them slightly flush or just slightly concave, so they do not retain water.

2.3.8 Stone cladding on the ramp surface

Cover the ramp floor with stone tile:

2.3.8.1 Verify that the concrete slab has the correct slope before cladding.

2.3.8.2 Use stone with a non-slip surface (especially in areas with rain or ice).

2.3.8.3 Lay the stone over a layer of mortar or cement-based adhesive suitable for exterior use.

2.3.8.4 Ensure that the joints are flush (without steps greater than approximately 5

mm) so they do not obstruct wheels.

2.3.8.5 Check the slope again and make sure no puddles form.

2.3.9 Handrail installation

Planning and Measuring

2.3.9.1 Location: Determine the exact location for the handrail. Ensure the handrail is accessible and easy for people with mobility impairments to use.

2.3.9.2 Measurements: Use a measuring tape to measure the length of the handrail and ensure it covers the area where support is needed. Mark the exact locations for the supports on the floor.

Type of Handrail and Support

2.3.9.3 Handrails should be non-slip, with a design that allows for easy grip. The material should be durable and resistant, stainless steel, Installing the Brackets

2.3.9.4 Marking holes: Use a pencil or chalk to mark the spots where the screws or anchors for the brackets will go. Ensure the marks are aligned and level, using a level.

2.3.9.5 Drilling: With an electric drill and the appropriate drill bit, drill holes into the wall or floor where the anchor screws will be placed. Ensure the holes are deep enough for the anchors.

2.3.9.6 Placing anchors: For concrete, insert the anchors or wall plugs into the drilled holes. Ensure they are secure.

2.3.9.7 Installing the brackets: Place the mounting brackets on the marked spots and secure them with the appropriate screws. Tighten the screws to make sure the brackets are firmly attached.

Attaching the Handrail

2.3.9.8 Once the brackets are securely installed, place the handrail onto them. Most handrails come with mounting brackets that attach to the base of the handrail.

2.3.9.9 Adjust the handrail to the correct height) and make sure it’s aligned properly.

2.3.9.10 Secure the handrail to the brackets with the provided screws, ensuring it is stable and secure.

Safety Check

2.3.9.11 After installing the handrail, check that all screws are tightly fastened, and the handrail is firm and secure.

2.3.9.12 Safety test: Ensure the handrail has no movement or noise that might indicate loose screws.

2.3.9.13 Height check: Verify that the handrail is at the correct height and easily accessible for people with mobility impairments.

Final Touches

2.3.9.14 If the handrail has rough edges or splinters, use a fine sandpaper to smooth them out and prevent injury.

2.3.9.15 Clean the handrail and installation area to remove dust or debris.

2.3.9.16 Follow the below regulations.

Continuity. Handrails shall be continuous within the full length of each stair flight or ramp run. Inside handrails on switchback or dogleg stairs and ramps shall be continuous between flights or runs.

Height. Top of gripping surfaces of handrails shall be 34 inches (865 mm) minimum and

38 inches (965 mm) maximum vertically above walking surfaces. Handrails shall be at a consistent height above walking surfaces, stair nosings, and ramp surfaces.

Top and Bottom Extension at Ramps. Ramp handrails shall extend horizontally above the landing for 12 inches (305 mm) minimum beyond the top and bottom of ramp runs.

Extensions shall return to a wall, guard, or the landing surface, or shall be continuous to the handrail of an adjacent ramp run.

2.3.10 Drainage

2.3.10.1 Reroute and relocate the drainage located on the corner of the patio and other utilities on the area before starting the works.

2.3.10.2 Connect the drainage of the ramp to the existing .

2.4 DESCRIPTION OF THE WORKS: LINE ITEM 2: BACK ALLEY PATIO

2.4.1 Ramp Structure:

2.4.1.1 The ramp system shall consist of straight sections, allowing for changes in elevation as shown in the drawing.

2.4.1.2 All walking surfaces shall be made of non-slip, ribbed galvanized steel sheet.

2.4.1.3 The ramp shall be supported by metal legs anchored securely to the ground or floor.

2.4.1.4 The ramp shall be constructed using high-quality galvanized steel sheet.

2.4.1.5 The ramp shall include side rails for safety, as per local building codes.

2.4.1.6 All edges must be finished to prevent injury.

2.4.1.7 The ramp must be securely anchored to the existing structure.

2.4.2 Construction of the side brick walls

The side walls serve as:

2.4.2.1 Retaining structure for the ramp.

2.4.2.2 Lateral protection (curb) for the wheelchair.

Potential support for guardrails/handrails.

Type of brick

2.4.2.3 Use solid or structural perforated clay brick, suitable for exterior use.

2.4.2.4 Avoid weak or lightweight hollow brick if it will carry loads or handrails without additional reinforcement.

Building the wall

Setting out

2.4.2.5 Mark on the footing the centerline of the walls and their thickness (for example, 12–15 cm for low walls, more if they will be retaining walls or very high).

2.4.2.6 Check that they follow the exact line of the ramp.

First course

2.4.2.7 Lay the first course with well-leveled mortar.

2.4.2.8 Check alignment with string line and level (horizontal) and its relationship to the slope of the ramp.

Subsequent courses

2.4.2.9 Use a cement–sand mortar suitable for exterior use (e.g., 1:4 or according to local standards).

2.4.2.10 Stagger the vertical joints (stretcher bond, not continuous vertical joints).

2.4.2.11 Check plumb (verticality) and alignment with a straightedge and plumb line.

Anchors and reinforcement

2.4.2.12 Place vertical rebars anchored into the footing if the wall retains soil or will be high.

2.4.2.13 Include ties between the wall and the ramp slab (e.g., deformed bars embedded in the concrete and extended into the wall).

2.4.2.14 If you will fix handrails, provide metal anchors or specially designed reinforcement at the required points.

Wall capping

2.4.2.15 Finish the top of the wall with a closing course or a coping piece (which may be brick, concrete, or stone) with a slight slope to shed water.

2.4.2.16 This also makes the subsequent cladding easier.

2.4.3 Preparing the walls for stone cladding

Before installing the stone tiles:

2.4.3.1 Surface cleaning

2.4.3.2 Remove any loose mortar, dust, and dirt from the brick.

2.4.3.3 Lightly dampen the wall .

Base coat

2.4.3.4 Thin layer of bonding mortar (scratch coat or rendering) is applied to even out the wall surface, especially if the brickwork is very irregular.

2.4.3.5 A metal mesh (reinforcing mesh or expanded metal lath) can be fixed with anchors or staples if greater adhesion is required, especially if the tiles are heavy or the wall is exposed to impact.

Adhesive

2.4.3.6 Use a cement-based adhesive of type C2 or a flexible thin-set mortar designed for natural stone.

2.4.4 Installing stone tiles on the side walls

Stone

2.4.4.1 natural stone cut to a uniform thickness (not highly irregular).

2.4.4.2 A finish with some texture to prevent slipping if it may be stepped on.

2.4.4.3 Suitable for exterior use and resistant to freeze–thaw cycles if applicable.

Installation

2.4.4.4 Apply the adhesive to the wall (and, depending on the product, also to the back of the tile) with a notched trowel.

2.4.4.5 Set each tile by pressing and slightly sliding it to ensure proper bond.

2.4.4.6 Use spacers or wedges to maintain regular joints.

2.4.4.7 Check with a level and straightedge that the surface plane is even (no bulges or depressions).

2.4.4.8 Prevent adhesive from staining the exposed face of the stone; clean immediately.

Joints

2.4.4.9 Once the adhesive has set, fill the joints with grout or joint mortar suitable for exterior use.

2.4.4.10 Joints must be completely filled and compacted, without voids.

2.4.4.11 Finish them slightly flush or just slightly concave, so they do not retain water.

2.4.5 Stone cladding on the ramp surface

Cover the ramp floor with stone tile:

2.4.5.1 Verify that the concrete slab has the correct slope before cladding.

2.4.5.2 Use stone with a non-slip surface (especially in areas with rain or ice).

2.4.5.3 Lay the stone over a layer of mortar or cement-based adhesive suitable for exterior use.

2.4.5.4 Ensure that the joints are flush (without steps greater than approximately 5

mm) so they do not obstruct wheels.

2.4.5.5 Check the slope again and make sure no puddles form.

2.4.6 Dimensions:

2.4.6.1 Each ramp section shall be 962 centimeters wide to accommodate wheelchair access.

2.4.6.2 The slope of each ramp section shall comply with ADA (Americans with Disabilities Act) or local accessibility standards, not exceeding maximum slope 1:12.

2.4.6.3 Landing platforms shall be provided at each change of direction and at the top and bottom of the ramp, with dimensions of at least 1.5 x 1.5 meters.

2.4.7 Handrails:

2.4.7.1 Continuous handrails shall be installed on both sides of all ramp sections and platforms.

2.4.7.2 Handrails shall be made of corrosion-resistant metal tubing, securely fixed to the ramp structure.

2.4.7.3 Ends of handrails shall be rounded for safety.

2.4.8 Safety Features:

2.4.8.1 All edges and corners shall be finished to prevent injury.

2.4.8.2 The ramp system shall be free of sharp protrusions and tripping hazards.

2.4.8.3 The structure must be stable and able to support a minimum load of [insert load, e.g., 250 kg/m²].

2.4.9 Finish:

2.4.9.1 All metal surfaces shall be treated for corrosion resistance and durability.

2.4.9.2 The ramp shall have a uniform, professional appearance.

2.4.10 Drainage

At bottom of ramp:

2.4.10.1 Install a trench drain (channel drain) perpendicular to the ramp, just before the landing or connection to pavement.

2.4.10.2 Cover with a flush grate rated for pedestrian/wheelchair use (narrow openings, non-slip).

2.5 AFTER IMPLEMENTATION

2.5.1 Detail engineering and "as-built" documents: After final completion of the work, but before final acceptance thereof, the Contractor shall provide: a complete set of "as-built" drawings, based upon the record set of drawings, marked to show the details of construction as actually accomplished.

2.5.2 When all site work is complete, the Contractor's site superintendent shall review all activities and walk the project area with the COR to ensure that the embassy staff is satisfyied and all work items are acceptable. If any items are not completed, they shall be noted and provided to the Contractor to be addressed and completed immediately.

2.5.3 The Contractor shall ensure that, upon demobilization, the site is left in a clean and orderly appearance, equal to or better than prior to start of work.

3 CODES AND STANDARDS

3.1 Any design specifications shall conform to the more stringent requirements of the following attached codes and standards.

3.2 Occupational Safety & Health Administration Codes (OSHA)

3.3 International Building Code (ICBO)

3.4 International Mechanical Code (ICBO).

3.5 Mechanical Systems - ASHRAE and SMACNA Standards.

3.6 National Fire Protection Association (NFPA 101) Life Safety Code.

3.7 https://www.access-board.gov/ada/guides/chapter-4-ramps-and-curb-ramps/

3.8 https://www.osha.gov/lawsregs/regulations/standardnumber/1910/1910.29#:~:text=falli ng%20object%20protection.-,1910.29(b),-Guardrail%20systems.%20The

4 PERIOD OF PERFORMANCE

4.1 The project shall start within five (5) calendar days after the date the Contractor receives the Notice-to-Proceed (NTP) issue by CO. The contractor shall sustain a Kick-off meeting to review the SOW, detailed schedule, execution, and safety plan.

4.2 Timetable of Deliverables

Complete the entire work no later than Forty five (45) calendar days after NTP. The time stated for completion shall include final cleanup of the premises.

LINE 1 : 30 calendar days

LINE 2 : 15 calendar day

4.3 Following Contract Award: See Section 2.1

4.4 Throughout the Project: Weekly Progress reports if it lasts longer than a week.

4.5 Project Close-out and Final Completion: Specifications and drawings of materials and design. See Section 2.3.

https://www.access-board.gov/ada/guides/chapter-4-ramps-and-curb-ramps/ https://www.osha.gov/lawsregs/regulations/standardnumber/1910/1910.29#:~:text=falling%20object%20protection.-,1910.29(b),-Guardrail%20systems.%20The https://www.osha.gov/lawsregs/regulations/standardnumber/1910/1910.29#:~:text=falling%20object%20protection.-,1910.29(b),-Guardrail%20systems.%20The

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